Miner&#39;s drill.



PATENTED APR. 3, 1906.

0. c. GRANMER. MINERS DRILL.

APPLICATION FILED MARIZ, 1905.

2 SHEETS-SHEET 1.

Q/Vdvwaw VEM 7 PATENTED APR. 3, 1906. G. G. GRANMER.

MINERS DRILL. APPLICATION FILED MAR.2, 1905.

2 SHEETS-SHBET 2.

anoanl'oz W7, ('1 Rummy! UNITED STATES PATENT OFFICE,

MINERS DRILL.

Specification of Letters Patent.

Patented April 3, 1906 Application filed March 2, 1905. Serial No. 248,174.

To all whom it may concern.-

Be it known that I, CLYDE CJCRANMER, a citizen of the United States, residing at Athens, in the county of Athens and State of Ohio, have invented certain new and useful Improvements in Miners Drills, of which the following is a specification This invention relates to that type of miners drills which embody, essentially, a suitable supporting-upright adapted to be positioned in the drift or cut in which the drilling operation is performed, special drilling mechanism arranged upon the upright, and means for adjusting the drilling mechanism according to varying conditions of service.

The invention comprises, essentially, a peculiar construction of a support for the drilling mechanism.

For a full description of the invention and the merits thereof and also to acquire a knowledge of the details of construction of the means for effecting the result reference is to be had to the following description and ac companying drawings.

lVhile the invention may be adapted to different forms and conditions by changes in the structure and minor details without departing from the spirit or essential features thereof, still some of the preferred embodiments are shown in the accompanying drawings, in which Figure 1 is a perspective view showing the invention as when in practical use. Fig. 2 is a vertical longitudinal sectional view. Fig. 3 is a side elevation of the drilling mechanism and supporting-frame thereof alone. Fig. 4 is a perspective view of the supporting-frame of the drilling mechanism. Fig. 5 is a detail view of the adjustable rest carried by .the supporting upright or post. Fig. 6 is a detail perspective view of the supporting-plate carried by the drill-supporting frame.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The support used in connection with the invention consists, preferably, of an upright or post 1, composed of spaced bars 1*, suitably connected at opposite ends by end members 2. The upright l is provided at its ends with adjustable points 3, the uppermost of said points operating through an opening in the upper end member 2 and having a side thereof provided with a plurality of notches 0r teeth 4. A boss 5 projects upwardly from the upper end member 2 and is provided with an opening in a side thereof, adjacent which is mounted a double pawl 6, which is adapted to engage the teeth 4 of the point 3 aforesaid to positively position this point at an ascertained adjustment. The point 3 is of course adapted for a certain amount of longitudinal or vertical movement with reference to the upright 1, so that the latter may be readily positioned in cuts or drifts of different sizes. A lower point 3 0f the post or upright 1 is likewise movable, and the upper end of this point is engaged by a cam 7 of a lever 8, suitably pivoted to the lower end portion of the upright 1. By pivotal movement of the lever 8 it will be seen that the point 3 may be forced downwardly to enter the floor or base of the mine or cut.

One of the bars 1 of the upright 1 is provided lengthwise thereof with a plurality of openings 9, and a rest 10 is adjustable upon the upright, operating longitudinally of the spaced bars 1, The rest 10 comprises a suitable body, at the ends of which are provided loops 11, one of the loops having a camlever 12 pivoted thereto and the other being provided with an interior projection or lug 13. The loops 11 are of such a size as to readily receive the bars 1 and admit of lateral movement of the rest 10 with reference to the upright in adjusting said rest. The projection or lug 13 is adapted to be received in any selected one of the openings 9 in the upright 1, and by suitable adjustment of the lever 12 each will engage one of the adjacent spaced bars 1. The rest 10 may be fixed at an ascertained adjustment vertically of the memher 1.

The rest 10 is designed to support the drilling mechanism at an ascertained adjustment, and said drilling mechanism consists of a supporting-frame 14, having a hook 15 at one end to engage over the rest 10 in such a way as to admit of pivotal movement of the frame 14 with reference to the upright 1. The frame 14 comprises a bar which extends upwardly at one end, as shown at 16, and thence outwardly to form the hook 15. A suitable drill-rod 17 is mounted upon the frame 14, said rod operating in a sleeve 18, internally threaded to receive external threads arranged lengthwise of the rod aforesaid. The sleeve 18 is made in sections, preferably of semicircular form, and the parts of the sleeve are held in place by spaced lugs 19, which extend upwardly from an end portion of the IIO frame 14. The sections of the sleeve 18 are formed with spaced annular ribs 20, and the extensions 19 receive the sleeve at a point between the said ribs 20, thereby preventing longitudinal play or movement of the sleeve with reference to the supporting-frame of the drilling mechanism. A latch-plate 21 is pivoted at one end to one of the extensions 19 and. is slotted at the opposite end, so as to engage with a suitable member upon the opposite extension, and when this latch-plate is in operative position connecting the extensions 19 the sections of the sleeve 18 are firmly held together, and said sleeve is prevented from displacement from the frame 14.

The drilling mechanism on the frame 14 will not be specifically described, as the same may be of varied construction, accord ing to the desire of the manufacturer and as necessary for the purposes for which the drill may be designed. The drill 25 is secured to the rod 17 for operation in the customary manner.

In order that the weight of the drilling mechanism may not be entirely carried by the drill-rod, the supporting-frame of said mechanism has an adjustable plate 50 (shown in Fig. 6) secured to the under side thereof, said plate being longitudinally slotted, as at 51, and attached by means of a set-screw or like member 52, which passes through the slot 51 in the frame 14. At one end of the plate 50 said plate is formed with a trans verse bar 53, said bar being adapted to engage the spaced bars 1 of the upright-post 1, so as to brace the frame 14 against downward movement when the latter is in position.

The adjustability of the plate 50 admits of varying the inclination of the drill-rod and rigidly braces the same at a predetermined inclination in a manner which will be readily seen.

Having thus described the invention, what is claimed as new is- 1. In a miners drill, the combination of a supporting post, a supporting frame con nected with the upright, and a slidable plate carried by said supporting-frame and adapted to hold the same in an ascertained position.

2. In a miners drill, the combination of a post or upright, a rest carried by said upright, a supporting-frame connected with said. rest, a longitudinally-adjustable supporting-plate carried by said frame, and a transverse bar at one end of said plate and adapted to bear against the supporting-post and support the drilling mechanism at a predetermined adjustment.

3. In a miners drill, the combination of a supporting-upright, a rest carried by said upright, a drill-supporting frame connected with said rest, and an adjustable supporting member carried by the drill-supporting frame and adapted to engage the supportingupright to hold said frame at a predetermined adjustment.

In testimony whereof I al'lix my signature in presence of two witnesses.

CLYDE C. CRANMER. 

